to stock up on something

大量储备某些东西

maryam: have you seen the weather forecast?

玛丽安﹕你有没有看天气预报？

francis: no, i've been too busy to watch tv today.

法郎西斯﹕没有，我今天很忙，没有时间看电视。

maryam: well, they're forecasting heavy snow from wednesday on. it could last for a few days.

玛丽安﹕据他们预测，星期三开始，会下大雪，而且可能连续几天。

francis: oh, no! i haven't done my weekly shopping yet.

法郎西斯﹕啊，糟了。我每星期买一次东西，现在还未去买。

maryam: you'd better get down to the supermarket as soon as you can.

玛丽安﹕你最好尽快去超级市场。

francis: you bet. i'm going to stock up on essentials like bread and milk in case the snow lasts longer than expected.

法郎西斯﹕这个自然。我会多买些面包、牛奶等必需品作储备，以防下雪的日子比预测要长。